#-*- coding:utf-8 -*-

# if __name__ == '__main__':
#     print "hello,world"

'''
    程序什么输出也没有, 和书本上的例子输出不同....
'''

import os
import sys

program = "python"
arguments = ["hello.py"]

print os.execvp(program, (program,) + tuple(arguments))
print "goodbye"



